The teachings of your Course are non-dualistic teachings. Should you return into ancient China or back again into India, you would've heard about Advaita Vedanta. Advaita in fact suggests “not two,” and that is a technique for referring to the fact that there is a oneness which connects us all. https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw